Re: [EAI] Thinking about requirements / downgrade

[Shawn Steele <Shawn.Steele at microsoft.com>]

> assumption is just a assumption. never comes true. if we move forward without considering the  "esoteric" one,
> the protocol might not run properly. if you have a utf-8 address and produce a automaic ACE address which
> happens to be there already, what will happen?

Worst case I'd imagine that it'd get converted to Unicode for display.  It should still "work"  I've never seen an address that looks anything like xn--, and while that isn't saying much, it seems that it'd be worth the risk to whatever does use xn-- to make progress towards Unicode email.

> That means that the different accounts but equalent will  belong to the different users.

That's doesn't seem possible.  If we used xn--, then it'd only be subject tothe different accounts condition if the legacy xn-- mail system were upgraded to support EAI.  In that case the administrator would necessarily either prohibit new mailboxes that matched xn--, or change the existing xn-- addresses.

-Shawn